Cracking and spallation of chromia and alumina scales during thermal cycling

被引：2
|
作者：
Osgerby, S [1 ]
Evans, H
Saunders, S
机构：
[1] Natl Phys Lab, Ctr Mat Measurement & Technol, Teddington TW11 0LW, Middx, England
[2] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
来源：
HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 5, PTS 1 AND 2 | 2001年 / 369-3卷
关键词：
alumina; chromia; cracking; spallation; thermal cycling;
D O I：
10.4028/www.scientific.net/MSF.369-372.491
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Scale cracking and spallation behaviour under repeated thermal cycling has been studied for Haynes 214 and 20Cr25NNb for a spectrum of temperature ranges. Both alloys show an increase in the rate of mass gain after a small number of cycles in most cases. Continued cycling of Haynes 214 eventually results in spallation but this is not observed in the 20Cr25NiNb alloy. The increase in the rate of mass gain is consistent with predictions for FE models.
引用
收藏
页码：491 / 498
页数：8
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